That was the longest part. Not the disagreement, not the demonstration, but the standing there while the patch dried cleanly under both their eyes. The oxide settled. The surface held. No clouding bloom rose through the old fixative. Instead the new base locked into the underlayer with a quiet matte grip and, as the wet sheen vanished, the warmth came up through it exactly as she had said it would. Not fish-glue dullness. Depth.
Living undertone beneath the eventual shell-white lift.
Mavrek said nothing.
The lamp hissed. Somewhere beyond the studio wall a rope knocked once against stored poles. The whole closed room seemed to contract around the patch while he looked at it and did not speak.
Iva made herself wait too. No victory noise. No explanation repeated. The test patch was the answer now. If he had an objection left, the wall would provide it.
At last he exhaled through his nose.
"You should have said it differently if you wanted not to be challenged."
The first sentence came level. The second came rougher.
"And I do not enjoy missing a binding agent on my own wall."
There it was. Honest irritation. Not graceful. Not optimized away. A man outpaced inside his own domain, irritated at the fact before he did anything noble with it.
He turned from the patch and picked up the marsh-red dish he had been grinding before she entered, handling it with the short rough movements of someone whose hands wanted occupation that his pride could not yet provide.
"You might have mentioned it before we moved the panel inside," he said. "The testing would have gone better in natural light."
Still irritated. Not the clean admiration she half-expected and half-dreaded. The petty truth of a professional who had been wrong about his own wall's substrate and was not yet done minding.
Iva's pulse kicked once, low and shamefully pleased.
"I did not know until I saw the craquelure in lamp shadow," she said. "The studio light showed it. Your natural light would have flattened the scale pattern."
He absorbed that with his jaw working once. Not disagreeing. Not yet agreeing either. Sitting with it, the way a material sat with a fixative that had not yet proved itself.
"I have been painting over casein on my own wall for six years," he said flatly. "And not once noticed the protein scale."
"You were looking for fish glue."
"I was looking for what I was told was there." His mouth thinned. "Which is the same error."
That — the full blunt admission arriving only after the irritation had burned through itself — landed harder than if he had simply praised her.
"It is better than anything I would have mixed," he said.
Not as absolution. As fact dragged through the teeth.
The old version of Iva would have deflected at once. Would have said he would have seen it eventually, or that the substrate did half the work, or that fatigue was making both of them dramatic. Some small mean evasive thing to cut the truth down before it drew blood.
She did not.
She let it stand between them.
Mavrek looked up from the test patch and saw that she was not going to make herself smaller for the convenience of the room.
Something in his face changed.
Not softened. Sharpened, if anything. Hunger moving under the surface with the same certainty his attention always carried. She became suddenly aware of the studio around them as a bodily fact: the grit of powdered mineral on her palms, the sweat drying under her blouse, the back wall lined with his sample strips and failed color hunts, the closed door, the deepening dusk pressing at the high window.
He set the marsh-red dish down.
Still no rush. That was what always undid her. Even now, with the charge between them tipping hard toward something no longer professional, he moved with the calm of a man continuing along a line already chosen.